.search{
    width: 654px;
    margin: 0  auto;
    border:1px solid;
    border-radius: 8px;
    height: 40px;
    display: flex;
}
.baidu_input{
    display: block;
    flex-grow: 1;
    border: none;
    border-radius: 8px 0 0 8px;
    padding: 0 20px;
}
.baidu_but{
    display: block;
    border:none;
    border-radius: 0 8px 8px 0;
    width: 100px;
    background-color: rgb(0, 174, 255);
    color: #fff;
}